

UAC would be a place I would look to try and resolve this. As such, it is recommended to not change these settings. Open Excel 2016, click on File and select Options. For example, one or several, types of active content have been disabled when you attempt to open the file. Malicious macros are often used by attackers to distribute malware. Clear the check box for the file type that you want to open or save to. To access it, you can click the 'Trust Center Settings' under the 'Security Warning' on the backstage view. User Configuration\Administrative Templates\Microsoft \ Options\Security\Trust Center\File Block Settings. Disable Trusted Documents- The Security Warning dialog box appears for files, each time you open them. See the External App Link settings section below for details on how to change them. In fact, taking a closer look at the gray options at the bottom, it appears that the Do not open selected file types setting is enabled without being able to change it. Click Trust Center, click Trust Center Settings, and then click File Block Settings.
